From 3ca6da24e397e550d589a69791be7697c0cb73c6 Mon Sep 17 00:00:00 2001
From: yui-knk <spiketeika@gmail.com>
Date: Fri, 23 Feb 2024 09:30:14 +0900
Subject: [Bug #20295] Fix SEGV when parsing invalid regexp

---
 test/ruby/test_syntax.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_syntax.rb b/test/ruby/test_syntax.rb
index d494820388..42108f955f 100644
--- a/test/ruby/test_syntax.rb
+++ b/test/ruby/test_syntax.rb
@@ -1034,6 +1034,14 @@ eom
     assert_not_match(/end-of-input/, e.message)
   end
 
+  def test_invalid_regexp
+    bug20295 = '[ruby-core:116913] [Bug #20295]'
+
+    assert_syntax_error("/[/=~s", /premature end of char-class/, bug20295)
+    assert_syntax_error("/(?<>)/=~s", /group name is empty/, bug20295)
+    assert_syntax_error("/(?<a>[)/=~s", /premature end of char-class/, bug20295)
+  end
+
   def test_lineno_operation_brace_block
     expected = __LINE__ + 1
     actual = caller_lineno\
-- 
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